<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<form action="http://www.taobao.com">
  用户名:<input type="text" name="username" value="abc" maxlength="5" readonly placeholder="用户名"><br>
  密码:<input type="password" name="password" placeholder="密码"><br>
  <input type="radio" name="gender" value="m" id="r1">
  <label for="r1">男</label>
  <input type="radio" name="gender" value="w" checked id="r2">
  <label for="r2">女</label><br>
  <!---->
  <input type="checkbox" name="hobby" value="cy">抽烟
  <input type="checkbox" name="hobby" value="hj">喝酒
  <input type="checkbox" name="hobby" value="tt">烫头<br>
 生日<input type="date" name="birthday"><br>
  靓照<input type="file" name="pic"><br>
    所在地<select name="city">
    <option value="bj">北京</option>
    <option selected value="sh">上海</option>
    <option value="gz">广州</option>
</select><br>
  <input type="submit" value="注册">
  <input type="reset" value="重新设置">
  <input type="button" value="按钮">
    <hr>
    <button type="submit">注册</button>
    <button type="reset">重置</button>
    <button type="button">按钮</button>

</form>

</body>
</html>